AOICRIE 4Pcs for Raspberry Pi 4 Quiet Fan, DC 5V 3.3V Brushless CPU Cooling Fan with Heatsink 4B / 3B+ 3B/ Zero/Zero W or Other Robot Project

【Perfect Cooling Tool】: Our DC 5V cooling fan run smoothly and quietly and it's good for heat dissipation for Raspberry Pi. It can be assembled easily by screws. Heatsinks are 3M 8810 thermal conductive adhesive tape backing. 【Wide Application】: Used for raspberry pi zero / zero w, for raspberry pi 2 b / 3b / 3B+ / 4 B, Retroflag-nespi case and Nespi Case. Not only can they be used for Raspberry Pi board, but also cooling the desert crossing robot project. Working wonderfully! 【Low Noise And Safe】: for Raspberry Pi Fans are with One-to-Two wire connector Interface for dual speed mode (3.3V and 5V DC) Low noise (15.92dBA), Long life (30,000 hours), which will not interfere with your work and life. 【Package Includes】: 4x Cooling Fan, 4x Screw Set. Don't need to purchase screws by yourself. Intimate service, easy to install! 【Quality Assurance】: AOICRIE friendly customer service. We have a commitment to every buyer 100% satisfaction. As long as you have any questions about the product, pls click “Seamuing” and click “Ask a question” to email! We will give you satisfied solution!